Since a few people have talked about how to gain subs, I'll try to talk about how to build engagement, since my comic does pretty well in that area.
Tip 1: What makes people comment.
One of the things people often miss about engagement is that people don't tend to comment on things like beautiful art (at least not more than once) or a really well-constructed story, or even a great action sequence. People do like those things, and they will draw and hold attention, but they don't get comments. In my experience the things that get comments flowing are:
- Things that are funny, whether they're intentional jokes or just odd character behaviours, relatable situations or even accidental innuendo.
- Intense emotional drama, reveals, betrayals and confessions.
- Stuff that is bizarre, novel or memetic.
For example, when average people talk about Star Wars, they'll usually talk about things that are funny, "these aren't the droids you're looking for.", "I hate sand." (example of unintentionally funny), things that are intensely emotional, "I am your father." or things that are novel, like lightsabers, Jedi knights or blue milk. It's hard to comment on something that's just a segment of the story doing its job of moving the plot along, so...
If you can structure a work so every update has at least one thing that could be commented on, like a joke, a big emotional high or a novel or memetic visual, item, creature or concept, you'll get more comments.
Tip 2: Lead by example and don't take your work too seriously
People in the comments often have a good laugh about the terrible choices my characters make, or guess (sometimes pretty accurately!) where the plot is going, or make jokes about the comic. I tend to be quite irreverent in my own creator comments, which are often quite dry or silly, encouraging the idea that it's okay to laugh at it and I won't get angry if people do. I'm not here to outsmart my readers, just to entertain them, so when people say silly stuff, I go in with a silly response. At this point my commenters have started replying to each other's comments, which creates a nice community feel and drives engagement. That does take a while though.
Tip 3: Be active in communities
A lot of people expect the audience to come to them while they remain an island, but that's not always the best way. If you're active on forums or discord communities commenting on other people's work, or you make the effort to leave interesting or fun comments on other people's comics and novels, you'll probably get more people coming to yours because they'll know you're a person they can engage with about content.